First period investigation of detached binary star AM Tau
文献类型：期刊论文
| 作者 | Wang ZH(王志华)1,2,3 ; Zhu LY(朱俐颖)1,2,3
|
| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 49页码:13-16 |
| ISSN号 | 1384-1076 |
| 关键词 | Stars: binaries: close Stars: binaries: eclipsing Stars: individual (AM Tau) |
| 通讯作者 | Wang, ZH |
| 产权排序 | 第一完成单位 |
| 英文摘要 | AM Tau is a detached eclipsing binary with the secondary component more evolved than the primary one. The period changes of this neglected eclipsing binary are analyzed based on four times of primary minimum obtained between 2007 and 2016 together with those collected from the literature. It is detected that the general trend of the O-C curve shows a downward parabolic variation, which reveals a continuous period decrease at a rate of dP/dt = -9.0 x 10(-7)(+/- 0.2) d yr(-1), meanwhile, the system undergoes two cyclic oscillations with periods of 24.1 and 8.8 years. The continuous decrease in the orbital period may be caused by angular momentum loss (AML) via an enhanced stellar wind of the evolved secondary star. The two cyclic variations in the O-C diagram are interpreted by the light travel-time effect via the presence of two additional stellar companions with masses estimated as M(3)sin i(3) similar to 1.36M(circle dot) and M(4)sin i(4) similar to 0.33M(circle dot). Their orbital separations are about 14 and 8 AU, respectively, and the orbital periods are almost in 3 : 1 resonance orbits. (C) 2016 Elsevier B.V. All rights reserved. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ANGULAR-MOMENTUM LOSS ; ALGOL-TYPE BINARIES ; POSSIBLE MASS ; OVERCONTACT BINARY ; PERSEI ; GEMINORUM ; COMPANION ; DELPHINI ; VIRGINIS ; WIND |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107616300215 |
| 语种 | 英语 |
| WOS记录号 | WOS:000380630000003 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9622]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.First period investigation of detached binary star AM Tau 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 3.University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Wang ZH,Zhu LY. First period investigation of detached binary star AM Tau[J]. NEW ASTRONOMY,2016,49:13-16. |
| APA | Wang ZH,&Zhu LY.(2016).First period investigation of detached binary star AM Tau.NEW ASTRONOMY,49,13-16. |
| MLA | Wang ZH,et al."First period investigation of detached binary star AM Tau".NEW ASTRONOMY 49(2016):13-16. |
入库方式： OAI收割
来源：云南天文台
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